NVIDIA shares fell 1.35% to $217.80 in Tuesday's premarket session as investors reduced exposure to large-cap technology stocks. Nasdaq futures declined 1.02% and S&P 500 futures dropped 0.59%. The market was also weighing NVIDIA's expansion into custom artificial intelligence chips through NVHBM, a memory architecture that places the memory controller in the base die of a high-bandwidth memory stack and uses NVIDIA's proprietary die-to-die connection instead of the standard JEDEC memory bus. Counterpoint Research analyst Neil Shah said the design could let NVIDIA sell networking, rack architecture, software and memory subsystems to custom accelerator developers without designing their accelerators itself. Amazon.com's Annapurna Labs is the first disclosed customer and plans to use NVHBM with its Trainium4 AI chip, while MediaTek has adopted NVIDIA's NVLink Fusion platform. Shah said the strategy could challenge Broadcom and Marvell, although he questioned some of NVIDIA's performance comparisons because the company used HBM4E, which is not yet shipping, and did not disclose its full testing baseline. NVIDIA's stock remains in a longer-term uptrend, trading above its 50-day and 200-day simple moving averages, but below its 20-day average. Resistance is near $228, while support is near the 200-day average and then $190. The shares trade at 27.9 times earnings and have a consensus Buy rating with an average price forecast of $349.15.